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  5 mars 2024 | International, Sécurité

  EU Commission proposes 1.5 billion euro common defence industry package

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  11 février 2020 | International, Aérospatial, Naval

  U.S. Navy’s Aircraft Launch Rail Gun Revealed

  Guy Norris Details of the U.S. Navy's new generation, electrically powered aircraft launch and recovery system, currently under test for the first time on the USS Gerald R. Ford (CVN-78) carrier, are visible in a large-scale model at the Singapore Airshow. The Electromagnetic Aircraft Launch System (EMALS) is in development to replace the traditional steam piston catapult launch system on current carriers. The new configuration also includes the electrically powered Advanced Arresting Gear (AAG), which replaces the hydraulic arresting gear in use on the Navy's 10 Nimitz-class aircraft carriers. The EMALS catapult, which is powered by a linear induction motor, is designed to accelerate aircraft more gradually than the steam system and put less stress on the aircraft. The system is also lighter and more flexible than the current design and is capable of launching a wider range of aircraft weights. The AAG is also designed for a broader range of aircraft, including UAVs. The large-scale cutaway model shows the linear induction motors of the EMALs as well as the banks of rotary engines incorporated in the AAG. Fine control of the arresting forces is provided by a large induction motor, which is coupled to energy-absorbing water turbines. Tests on the Ford, the eponymous lead ship of navy's first new class of carriers since the 1970s, are part of efforts to assess the performance of the technology for launch and landing operations. The system has proved more challenging to develop than expected, and improvements are underway to boost reliability for the required sortie generation rate. The service is evaluating aircraft compatibility before the scheduled deployment of the Ford in 2022. https://aviationweek.com/shownews/singapore-airshow/us-navys-aircraft-launch-rail-gun-revealed

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  30 novembre 2018 | International, C4ISR

  What will forces need in complex EW environment?

  By: Mark Pomerleau Sophisticated adversaries have been leveraging the electromagnetic spectrum to create significant dilemmas for U.S. and allied forces, say officials, and transformative efforts are needed to deal with an increasing complicated threat. “China is outspending us probably 10 to 1 on trying to figure out how to use and manipulate the electromagnetic spectrum. Russia showed us what they're going to do with it in their incursion into Ukraine ... Electromagnetic warfare, electronic warfare at the maneuver level,” Gen. Paul Selva, vice chairman of the Joint Chiefs of Staff, said at the annual Association of Old Crows symposium held Nov. 28 in Washington, D.C. “We haven't designed ourselves to fight that fight. They have demonstrated that they are not only willing, but they're [also] capable of deploying and employing electronic countermeasures at the ground and maneuver level. It is a reality that we are going to have to adjust to.” The capabilities forces need For the Army, it's not going to be one thing, Col. Mark Dotson, the capabilities manager for electronic warfare at the Cyber Center of Excellence, said at the symposium Nov. 27. There have to be layered capabilities and effects, each increasing range and sensing capability. “We're still sorting through that,” Dotson said, noting the need to develop from the current tactical focus all the way to the strategic level. “We're trying to expand our scope and get into what are those other things we need. Do we need artillery delivered capability? Do we need loitering munitions? Is it going to manned or is it an unmanned aircraft?” In addition, Dotson said, the Army needs systems integrating EW, cyber and signals intelligence, and the service has started generating requirements working with the Intelligence Center of Excellence and the Cyber Center of Excellence. “I think SIGINT and EW go hand in hand, so us not sharing going forward and working like a team like we do now makes no sense,” Col. Jennifer McAfee, Dotson's counterpart for Terrestrial and Identity at the Army Intelligence Center of Excellence, told C4ISRNET in a November interview. McAfee added that the team is also joining up with the other centers of excellence to ensure that when they are pursuing requirements for airborne or ground systems, the Intelligence and Cyber centers are plugged in to leverage EW expertise and not create duplicative efforts. Geolocating solutions Others across the joint force have expressed the desire for more decoys, physical or non-physical, to confuse or confound enemy systems. “It's network electronic warfare from air, sea and land; it's smart warfare combined with advanced decoys, whether they're physical decoys or cyber decoys out there; drones, swarms and jamming drones,” Col. John Edwards, commander of the 28th Bomb Wing, said at the symposium. “Things that go out there to where an air defense operator cannot distinguish between what is cyber and what is real out there.” Such aerial systems can be used to either overwhelm or distract air defenses, allowing strike aircraft to penetrate, or take the point jamming the air defenses and thus assuming all the risk leaving the more expensive and manned systems in the rear. On the ground side, officials have also discussed the need for more investments in decoys. Lt. Gen. Stephen Fogarty, commander of Army Cyber Command, told reporters in August that big investments needed to be made in this area. He envisioned forces being able to drop a decoy emitting strong signals off a truck at a fork in the road, thus drawing enemy attention to it. “Now we're presenting multiple dilemmas to the adversary,” he said. One of the difficulties of modern warfare is all jammers and sensors emit some kind of a signal in the electromagnetic spectrum, meaning they can be geolocated and targeted. This means if an enemy wants to use it, they have to take into account a risk calculus in revealing their position. “Jammers are emitters, emitters are targets. I think that's something we really ought to be thinking about,” Selva said. “If you're going to operate in an electronically dense environment ... the tools actually reveal their position." Similarly, decoys can be used to throw adversaries off the trail of friendly forces or distract from other items forces might want to protect. ”If I have something like a counterfire radar, that's really important to me. Maybe what I want to do, again, is push an alternate threat to the adversary," Fogarty said. In these complex environments, Selva said forces need to be able to identify, localize and characterize the jammer. If that's possible, then forces can decide what to do with it. If the answer is they want to kill it, they have to have a tool to kill it. “If you can't do all three of those things, the jamming is very effective,” he said. https://www.c4isrnet.com/electronic-warfare/2018/11/29/what-will-forces-need-in-complex-ew-environment